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A signal indicating Greenwich mean time would be preceded with ______.
A.a code hoist to indicate Greenwich mean time to follow
B.the letter G
C.the letters GT
D.the letter Z
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单选题A signal indicating Greenwich mean time would be preceded with().A
a code hoist to indicate Greenwich mean time to followB
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the letters GTD
the letter Z
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单选题A signal indicating zone time is preceded with the letter().A
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